Some where to hold your change. Use this sterling coin holder.
You can clearly identify the coins and select quickly the change you require.
Euro Coin Holder Link: https://www.prusaprinters.org/prints/51760-euro-coin-holder
When empty you can see which denomination goes where in the holder as I have printed each denomination on the bottom.
There are plenty of holders for Euros on several websites but I have not seen one for sterling.
The holder structure is so designed to give it rigidity.
Print in PLA.
Place upright on Print Bed, no support required.
I printed 0.2mm quality, 15% infill,
The author marked this model as their own original creation.